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<?php $textData = pack("N", '33'); var_dump($textData); $textData = unpack("N",$textData); var_dump($textData); echo mcrypt_get_iv_size(MCRYPT_RIJNDAEL_128, MCRYPT_MODE_CFB);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mEXJ8
function name:  (null)
number of ops:  24
compiled vars:  !0 = $textData
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'pack'
          1        SEND_VAL                                                 'N'
          2        SEND_VAL                                                 '33'
          3        DO_ICALL                                         $1      
          4        ASSIGN                                                   !0, $1
    3     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                                 
    4     8        INIT_FCALL                                               'unpack'
          9        SEND_VAL                                                 'N'
         10        SEND_VAR                                                 !0
         11        DO_ICALL                                         $4      
         12        ASSIGN                                                   !0, $4
    5    13        INIT_FCALL                                               'var_dump'
         14        SEND_VAR                                                 !0
         15        DO_ICALL                                                 
    6    16        INIT_FCALL_BY_NAME                                       'mcrypt_get_iv_size'
         17        FETCH_CONSTANT                                   ~7      'MCRYPT_RIJNDAEL_128'
         18        SEND_VAL_EX                                              ~7
         19        FETCH_CONSTANT                                   ~8      'MCRYPT_MODE_CFB'
         20        SEND_VAL_EX                                              ~8
         21        DO_FCALL                                      0  $9      
         22        ECHO                                                     $9
         23      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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